(1) ILL, DS/LSS, 6 rue Jules Horowitz, B.P. 156, 38052 Grenoble Cédex 9, France, FR;(2) CNRS, CRMD, 1bis rue de la Ferollerie, 45071 Orléans Cédex 2, France, FR;(3) CEN Saclay, DRECAM/SCM, 91191 Gif/Yvette Cédex, France, FR
Abstract:
we have established experimentally the region of existence of smectic and sponge lyotropic microstructures in the presence
of synthetic hydrophilic clay particles. Taking into account the adsorption isotherm, we determined the extension of the single-phase
regions by visual inspection and looking at low-q behaviour of the small-angle neutron scattering. Conditions of stability such as geometric constraints associated with fluctuation
quenching are discussed.
Received 11 December 2000 and Received in final form 11 April 2001